How to Macerate Perfume Properly?

What is called maceration in bottled perfumes is like the micro oxygenation process used in wine making. A little bit of oxygen and time causes ester formation just like liquor aging in wooden barrels.

Invert the bottle and spray. On the compression stroke of the atomizer, the liquid squirts out. On the rebound stroke air will get in. Keep doing it until the liquid in the tube is empty. In clear bottles, you can see the air bubble into the juice as the pickup tube gets empty. Make sure there is an air pocket at the end of the pickup tube when doing this, so you don't end up wasting a lot of juice without getting air in.

I think you're mistakening maceration with aging. I'm not sure adding oxygen to a perfume is a good thing as oxygen can deteriorate a fragrance which is why bottles of perfumes are tightly sealed.

MACERATION versus AGING : fragrance (reddit.com)

That sounds like oxidation, not maceration. And it happens naturally as more air enters the bottle AFAIK, not sure why you'd want to accelerate the process.

This. The maceration is done in the fragrance factory and the process is ready when the fragrances are shipped to the shops, at least if the manufacturer is professional. Some very small indie companies might not handle the process professionally but all bigger companies do for sure. And oxidation is completely different. Normally it's not desirable and you should avoid it because it alters the smell. To avoid oxidation the fragrances should be stored in cool and dark.

Anyone that is reading this, do not open your bottles or tamper with the crimp in any way. No perfume needs artificial maceration or aging.

One exception is fragrances from Dua, but then you just let the bottle sit and not do anything to it at all and let it macerate or age it naturally.